import type { ChannelBookmark, ChannelBookmarksState } from '@mattermost/types/channel_bookmarks';
import type { IDMappedObjects } from '@mattermost/types/utilities';
import type { MMReduxAction } from 'mattermost-redux/action_types';
export declare function byChannelId(state: ChannelBookmarksState["byChannelId"] | undefined, action: MMReduxAction): {
    [channelId: string]: IDMappedObjects<ChannelBookmark>;
};
declare const _default: import("redux").Reducer<{
    byChannelId: {
        [channelId: string]: IDMappedObjects<ChannelBookmark>;
    };
}, import("redux").AnyAction, Partial<{
    byChannelId: {
        [channelId: string]: IDMappedObjects<ChannelBookmark>;
    } | undefined;
}>>;
export default _default;